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07.09.2007 at 09:19AM PDT, ID: 22683679
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9.0

Oracle query performance

Asked by Dan_Wong in Oracle Database

Tags: , ,

Hi there - hope someone is able to help.

Previously someone was kind enough to write me a query. Oracle 10 db.
( background - http://www.experts-exchange.com/Database/Oracle/Q_22143440.html )

Basically the query ( see below ) is taking far too long to run and I was looking for suggestions to improve the performance of this.
 i.e. is there a more efficient way to achieve the same results.

note - this needs to be a query,  I'm not able to create temporary tables etc to achieve this.
Neither am I able to create indexes etc. to help with this.


SQL ;

SELECT * FROM
(SELECT
MIN(DECODE(ACC_CODE,91,SALE_DATE)) OVER (PARTITION BY TRANSACTION_ID ORDER BY SALE_DATE) SALE_DATE,
DECODE(ACC_CODE,92,DELIVERY_DATE) DELIVERY_DATE, AMOUNT
FROM TABLE)
WHERE DELIVERY_DATE IS NOT NULL

 


Any suggestions ?
Thank you,
d.Start Free Trial
 
 
[+][-]07.09.2007 at 09:29AM PDT, ID: 19446519

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[+][-]07.09.2007 at 10:05AM PDT, ID: 19446826

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[+][-]07.10.2007 at 10:52AM PDT, ID: 19456136

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[+][-]07.10.2007 at 06:39PM PDT, ID: 19459291

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About this solution

Zone: Oracle Database
Tags: oracle, query, performance
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Solution Provided By: ishando
Participating Experts: 3
Solution Grade: A
 
 
[+][-]07.12.2007 at 06:52AM PDT, ID: 19471636

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